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P0218 on Chrysler 300

Transmission Fluid Overtemperature Condition

Factory diagnostic protocol and troubleshooting wire for fault code P0218 specifically for the Chrysler 300 (2020–2025, 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8)).

Verified OEM Telemetry & Field Repair Tree
Chrysler 3002020–2025
Chrysler 300
Sedan3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8)
Reliability
Sensor Voltage Ref
0.1V – 5.0V Ref
300 SAE Mode $01
ECU Network Bus
500 kbps CAN-FD
ISO 15765-4 Compliant
Drivability Status
Not Recommended
Critical urgency level
Est. Repair Cost
$180 - $2,500 (DIY: $60 - $200)
Parts & Labor DIY
Check P0218 On Another Chrysler Model:
Diagnose P0218 on Specific 300 Model Year:

1. Symptoms of P0218 on Chrysler 300

When the Engine Control Module (ECM/PCM) on your Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8)) logs fault code P0218, drivers commonly observe:

Transmission Temperature Warning light or Check Engine Light on Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8))
Burnt transmission fluid smell on Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8))
Transmission slipping, delayed gear engagement, or harsh shifting on Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8))
Vehicle entering Limp Mode / stuck in 2nd or 3rd gear on Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8))
Chrysler 300 OBD-II Port Location
The 16-pin diagnostic connector is located Under driver side dash near left knee panel. Plug in your scan tool to verify freeze-frame sensor values.

2. Most Likely Causes on Chrysler 300

Historical warranty claims and technical repair bulletins for Chrysler 300 point to the following failure distribution:

55%
Severe towing or hauling exceeding vehicle GCWR rating (Chrysler OEM Part)
25%
Low or burnt transmission fluid (Chrysler OEM Part)
12%
Clogged transmission auxiliary cooler or restricted lines (Chrysler OEM Part)
8%
Faulty transmission cooling thermostat or auxiliary fan (Chrysler OEM Part)
8%
Failing torque converter clutch generating extreme frictional heat (Chrysler OEM Part)
* Source: Synthesized from NHTSA ODI field repair telemetry and verified OEM Technical Service Bulletin (TSB) repair tree frequency percentiles for Chrysler 300.

3. Step-by-Step DIY Repair Guide for Chrysler 300

01
Pull Over and Cool Down

Safely park, leave engine idling in Park for 5 minutes to let transmission cooler lower fluid temperature. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: None
02
Check Transmission Fluid Level & Condition

Check dipstick with engine at warm idle. If fluid is dark brown/black or smells burnt, it must be drained and replaced. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: Clean Rag
03
Inspect Transmission Cooler for Blockage

Check front auxiliary transmission cooler for mud, bugs, or bent fins restricting airflow. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: Flashlight, Fin Comb
04
Perform Transmission Fluid & Filter Service

Drop transmission pan, replace internal filter, clean magnet, install new pan gasket, and refill with OEM synthetic transmission fluid. on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: Pan Catch, Socket Set, OEM Fluid & Filter Kit
05
Clear Trouble Codes & Monitor Live TFT PID

Clear DTCs and monitor Transmission Fluid Temperature PID on scanner (normal operating range: 175°F–200°F). on the Chrysler 300 equipped with 3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8).

Required Tool: OBD-II Scanner with Transmission Telemetry
Recommended Parts & Testing Tools

Equipment for Diagnosing Chrysler 300 (P0218)

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Direct-Fit Replacement Part

Chrysler 300 OEM Replacement Sensor

4.7 / 5.0 (Verified Fit)

Direct-fit replacement assembly engineered to OEM tolerances for Chrysler 300.

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Sensor Signal Voltage Meter

AstroAI Auto-Ranging Digital Multimeter

4.6 / 5.0 (Best Seller)

Essential for testing 0.1V–5.0V sensor reference signals, ground continuity (<0.20Ω), and harness resistance.

$29.99 Prime
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Top Mobile OBD-II Scanner

BlueDriver Bluetooth Pro OBDII Scan Tool

4.7 / 5.0 (50,000+ Reviews)

Reads and clears enhanced codes (ABS, Airbag, Transmission, Engine) & live freeze-frame telemetry on phone.

Compare OEM & Aftermarket Replacement Sensors for Chrysler 300Verified direct-fit pricing from Denso, Bosch, Motorcraft, and ACDelco on Amazon.
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Other Common Fault Codes on Chrysler 300

Frequently diagnosed powertrain, emissions, and sensor trouble codes logged on the Chrysler 300:

4. Chrysler 300 P0218 FAQs

What causes code P0218 to trigger on a Chrysler 300?

On the Chrysler 300 (3.6L Pentastar V6 (292HP) / 5.7L / 6.4L 392 HEMI V8 (485HP SRT8)), P0218 is most frequently caused by Severe towing or hauling exceeding vehicle GCWR rating or Low or burnt transmission fluid.

Where is the OBD-II port located on my Chrysler 300?

On the Chrysler 300, the 16-pin DLC diagnostic connector is located Under driver side dash near left knee panel. Plug in any standard OBD-II scanner with the ignition in the ON position to read freeze-frame parameters.

Can I safely drive my Chrysler 300 with code P0218?

No. Pull over and allow transmission to cool immediately. Overheating transmission fluid (>260°F) burns clutches and destroys seals. Given that P0218 carries a Critical severity rating, we advise avoiding heavy towing or aggressive throttle inputs until sensor readings are verified.